| 摘要 |
<p>A cockroach trap constructed by providing side walls surrounding a base, forming several openings in each said side wall the edges of which lie at an angle of 30 to 60 degrees apart with the apex of said angle directed downwardly, each opening being designed to serve as an entrance for the cockroaches, and providing a layer of adhesive on the surface of said base spaced inwardly of the openings.</p> |
